Thre was these two guys trying to walk over water on these ropes (you know what i mean, like tightrope walking but over a river, and theres a rope overhead to hold onto) anyway, these two guys were on the rope and the dog was at the other side of the water, stood with his fron two legs on the rope. These guys both fell backwards causing the dog to be flipped about 30 foot in the air...

There is no meaning to it. The other day some people I know were discussing it so one guy said that actually there are theories on why we exist, one is that we are all a part of someone's memory and not real at all. I like conspiracy theories. I just think life doesn't have much purpose, no more than it has for plants or animals.

My dog only thinks about reproducing, getting fed and enjoying himself. In reality, I reckon humans are driven by a similar set of motives hidden behind a facade of intellectual sophistication and situational complexity. Like.

"There are ways of telling whether she is a witch."
"Are there? Oh well, tell us."
"Tell me. What do you do with witches"
"Burn them."
"And what do you burn, apart from witches?"
"More witches."
"Wood."
"Good. Now, why do witches burn?"
"...because they're made of... wood?"
"Good. So how do you tell whether she is made of wood?"
"Build a bridge out of her." [BEST LINE EVER]
"But can you not also build bridges out of stone?"
"Oh yeah."
"Does wood sink in water?"
"No, no, it floats!... It floats! Throw her into the pond!"
"No, no. What else floats in water?"
"Bread."
"Apples."
"Very small rocks. "
"Cider. "
"Gra- Gravy."
"Cherries."
"Mud."
"Churches." [ :D ]
"Lead! Lead!"
"A Duck."
"...Exactly. So, logically... "
"If she weighed the same as a duck... she's made of wood."
"And therefore..."
"...A witch!"

To live for a certain period of time, respond to your natural imperatives, protect your own existence, procreate etc.

Does your definition of life extend to anything that is alive? How much time do you suspect horses dedicate to debating questions like this? Or do they just behave the way the machinations evolution have programmed them to ?

there is no meaning of life. We are merely animals, here to be born, reproduce and die.
We are the end product of billions of years of evolution and it's only our intellect that makes us believe that there should be some sort of meaning attached to it.

How you spend your time here is up to you. Religion has hijacked this inherrent insecurity and whilst I detest any religious leanings due to the conflicts it creates, I do feel that it is an adequate form of population control.
:P